<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>标签语法和注释</title>
</head>

<body>
  <div></div>

  <!-- 自结束标签 -->
  <input type="text">
  <input type="text" />

  <!-- 注释注释注释注释注释  -->
  <!-- <div></div> -->
</body>

</html>